How does Chapter 6 describe the significance and power of a Sadguru, specifically in relation to Sai Baba?

Chapter 6 of the Sai Satcharitra illustrates the profound significance of a Sadguru, identifying Sai Baba as the primary embodiment of this principle. The text states that as soon as the word 'Sadguru' is uttered, Sai is the one who comes to mind, placing a blessing hand on the devotee's head. This touch is described as wondrous, capable of burning away the subtle body or ego, something even the fire of dissolution cannot do. The chapter emphasizes that the Sadguru's guidance is like being a helmsman on a boat, ensuring the devotee reaches the far shore of their spiritual journey. This powerful description in Chapter 6 highlights the Sadguru's role in purification, protection, and ultimate liberation.